1-55059470-C-T

Position:

• chr1-55059470-C-T

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BA1

The NM_174936.4(PCSK9):​c.1504-16C>T variant causes a splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0027 in 1,556,858 control chromosomes in the GnomAD database, including 88 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.014 (46 hom., cov: 33)
  • Exomes 𝑓: 0.0015 (42 hom.)
• Consequence: PCSK9 NM_174936.4 splice_polypyrimidine_tract, intron
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:6
• Conservation: PhyloP100: 0.571

Genes affected

PCSK9 (HGNC:20001): (proprotein convertase subtilisin/kexin type 9) This gene encodes a member of the subtilisin-like proprotein convertase family, which includes proteases that process protein and peptide precursors trafficking through regulated or constitutive branches of the secretory pathway. The encoded protein undergoes an autocatalytic processing event with its prosegment in the ER and is constitutively secreted as an inactive protease into the extracellular matrix and trans-Golgi network. It is expressed in liver, intestine and kidney tissues and escorts specific receptors for lysosomal degradation. It plays a role in cholesterol and fatty acid metabolism. Mutations in this gene have been associated with autosomal dominant familial hypercholesterolemia. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2014]

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.9).
• BP6: Variant 1-55059470-C-T is Benign according to our data. Variant chr1-55059470-C-T is described in ClinVar as [Benign]. Clinvar id is 36668.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr1-55059470-C-T is described in Lovd as [Benign].
• BA1: GnomAdExome4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0511 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PCSK9	NM_174936.4	c.1504-16C>T		splice_polypyrimidine_tract_variant, intron_variant		ENST00000302118.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PCSK9	ENST00000302118.5	c.1504-16C>T		splice_polypyrimidine_tract_variant, intron_variant		1	NM_174936.4	P2

Frequencies

GnomAD3 genomes AF: 0.0137 AC: 2091 AN: 152196 Hom.: 46 Cov.: 33

Gnomad AFR AF: 0.0481

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00491

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000118

Gnomad OTH AF: 0.00766

GnomAD3 exomes AF: 0.00331 AC: 541 AN: 163566 Hom.: 6 AF XY: 0.00244 AC XY: 211 AN XY: 86442

Gnomad AFR exome AF: 0.0492

Gnomad AMR exome AF: 0.00215

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000862

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000109

Gnomad OTH exome AF: 0.000886

GnomAD4 exome AF: 0.00150 AC: 2103 AN: 1404544 Hom.: 42 Cov.: 32 AF XY: 0.00124 AC XY: 862 AN XY: 693198

Gnomad4 AFR exome AF: 0.0532

Gnomad4 AMR exome AF: 0.00252

Gnomad4 ASJ exome AF: 0.0000397

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000754

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000104

Gnomad4 OTH exome AF: 0.00294

GnomAD4 genome AF: 0.0138 AC: 2097 AN: 152314 Hom.: 46 Cov.: 33 AF XY: 0.0127 AC XY: 948 AN XY: 74482

Gnomad4 AFR AF: 0.0481

Gnomad4 AMR AF: 0.00490

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000118

Gnomad4 OTH AF: 0.00758

Alfa AF: 0.00886 Hom.: 5

Bravo AF: 0.0156

Asia WGS AF: 0.00318 AC: 11 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:6

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:2

Benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Jun 28, 2017	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Familial hypercholesterolemia Benign:2

Benign, criteria provided, single submitter	clinical testing	GENinCode PLC	Feb 21, 2023	- -
Benign, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Jul 06, 2017	- -

Hypercholesterolemia, autosomal dominant, 3 Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Feb 01, 2024

- -

Hypercholesterolemia, familial, 1 Benign:1

Benign, criteria provided, single submitter

curation

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Aug 18, 2011

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.90
CADD	Benign	13
DANN	Benign	0.68
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs28362269; hg19: chr1-55525143;